Years 0–8 · Flexible
Full of oil
The shingle bends without complaint. Granules are locked into a soft asphalt bed, and the mat sheds water exactly the way it was designed to.
Roof rejuvenation · Utah County
Your roof isn't worn out. It's dried out.
Asphalt shingles don't fail because the fiberglass gives up. They fail because the oils inside the asphalt evaporate, and once those oils are gone the shingle turns brittle, sheds granules and cracks. Roof ReNU puts the oil back — inside the shingle, not painted on top.
This summer's drought: roughly 78% of Utah is still in severe or extreme drought — exactly the stretch of heat and UV that dries shingle oil out fastest. See what that means for your roof →
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15-year-old shingle · illustrative
$0.95Per square foot
2–3 hrsOne visit, start to finish
$20k+Typical replacement avoided
ZeroDumpsters in the driveway
How a shingle dies
It's a slow leak of oil, not a sudden failure
Asphalt is a petroleum product. Sun, heat and Utah's freeze–thaw cycle pull the light oils out of it year after year. Here's the arc most roofs follow.
Years 8–15 · Drying
Losing grip
Oils have started to leave. You see granules in the gutters and the first hairline checking on the sun-facing slopes. This is the window where rejuvenation does the most good.
Years 15+ · Brittle
Cracking and curling
Dry asphalt can't move with the deck. Edges curl, tabs crack, and bare spots expose the mat. Past a point, no treatment brings it back — replacement is the honest answer.
Rejuvenation is maintenance, not resurrection. The whole point is to treat a roof while it still has life in it — the same reason you change oil before the engine knocks.
The decision
Rejuvenate, or replace?
Both are legitimate answers depending on the roof. Here's what each one actually costs you — in money, time, and disruption.
Roof ReNU treatment
$0.95/ sq ft
Most homes land between $1,450 and $2,200
- Time on site
- 2–3 hours, single visit
- Waiting list
- Booking now
- Mess
- No dumpster, no tear-off
- Landfill waste
- None
- Life added
- About 5 years per treatment
Full replacement
$20,000+
Commonly $20k–$30k and up
- Time on site
- 3–5 days
- Waiting list
- Weeks to months
- Mess
- Dumpster, nails, noise
- Landfill waste
- 3–5 tons of shingles
- Life added
- 15–20 years
Replacement buys more years. It also costs roughly ten times as much and can't be undone. The question isn't which lasts longer — it's which makes sense for the roof you have right now. If yours is past treating, we'll tell you.
Third-party testing
Measured at five years, not day one
Independent testing by PRI Asphalt Technologies compared untreated 15-year-old field shingles against treated ones after a 1,500-hour accelerated weathering run — roughly five years of natural aging.
53%Less granule lossGranules stay bedded in the asphalt, which is what keeps UV off the mat.
66.7%Better cold-weather flexibilityPliability held to 5 °C instead of 15 °C — it matters every Utah winter.
24%Higher tear strength7.6 N untreated versus 9.4 N treated.
| Property | Untreated | Treated | Result |
|---|---|---|---|
| Granule loss (g) | 1.43 | 0.67 | 53% less loss |
| Tear strength (N) | 7.6 | 9.4 | Stronger mat |
| Pliability (°C) | 15 | 5 | 66.7% better cold flex |
| Color change (ΔE) | — | 7.02 | Visibly refreshed |
Rejuvenator Performance Study, PRI Asphalt Technologies, March 2025, commissioned by the manufacturer of the product Roof ReNU applies. Granule adhesion measured under ASTM D4977/D4977M; pliability under ASTM D3462/D3462M. Results describe laboratory conditions on the shingles tested; your roof's age, pitch, exposure and condition all affect the outcome. We'll tell you honestly if yours isn't a fit.
Candidacy
Not every roof qualifies
We'd rather turn down a job than take money for a treatment that won't help. Here's roughly where the line sits — the assessment settles it.
✓ Good candidate
- Asphalt shingles, roughly 6–18 years old
- Granule loss showing up in gutters and downspouts
- Surface looks faded or chalky, especially south and west slopes
- Shingles are intact and lying flat, just dry
- Deck and flashing are sound, with no active leaks
- You want to push replacement out and protect what's there
✕ Not a candidate
- Missing, cracked through, or badly curled shingles
- Active leaks or visible decking damage
- Storm or hail damage — that's an insurance claim, not a treatment
- Wood shake, tile, slate or metal roofing
- A roof already at or past the end of its service life
- Previously coated or sealed with a surface product
The visit
Five steps, one visit
1
Full inspection
Every plane checked — shingle flexibility, granule loss, valley flashing and pipe collars. This is where we tell you yes or no.
2
Debris blow-off
Leaves, branches, pine needles and loose moss cleared, so the treatment reaches the asphalt instead of sitting on top of dirt.
3
Shingle tune-up
Lifted tabs secured, exposed nail heads sealed, minor flaws corrected before anything is sprayed.
4
Precision spray
Even, measured application across every shingle. It absorbs within the hour, and the roof is dry the same day.
5
Photo package
Before and after photos for your records, your warranty file, and your insurer if they ask.
Ballpark it yourself
Roughly what it'll cost, before anyone knocks on your door.
Enter your roof's square footage. If you don't know it, your home's footprint is a reasonable starting guess — most roofs run 10 to 30 percent larger than that depending on pitch.
This is an estimate at our standard $0.95 per square foot, not a quote. The free assessment confirms the real number and whether your roof qualifies at all.
Estimated treatment
$2,340
About 12% of a $20,000 replacement
See it happen
One roof, mid-treatment
This is what rejuvenation looks like from above while it's being applied — a real Roof ReNU job, crew on the roof, the wet application line visible against the dry, untreated shingle around it.
Three signs your roof is drying out
You can spot most of these from the ground with a phone camera. If any look familiar, the roof is worth a closer look.
Illustration
Granule loss
Bare, darker patches where the protective granules have washed off — and a gritty layer collecting at the bottom of your downspouts.
Illustration
Chalky fading
The south and west slopes look lighter and duller than the north side. That colour shift is oxidised asphalt showing through.
Illustration
Hairline checking
Fine cracks running across the tabs. Caught early this is still treatable; once cracks go through the mat, it isn't.
The three swatches above are illustrations of each condition. Photographs of our own Utah County jobs go here as we complete them.
Free assessment
Find out if your roof qualifies
We'll inspect it, photograph what we find, and tell you plainly whether rejuvenation makes sense — or whether you're better off saving for a replacement.
- Call or text
- (951) 234-6529
- Email
- roofrenu.info@gmail.com
- Service area
- Utah County and the surrounding valleys
- Hours
- Mon–Sat, 8am–6pm